To access this site, please click on the following link:
Once there, create a username "aaa" and then click on the "Check Availability" button located to the right of the text box.
If you are using Firefox or Chrome, a modal popup will appear indicating that the username is not available.
However, if you are using Internet Explorer, the same dialog will appear in the lower left corner without any styling and with an incorrect position (should be centered on the screen).
- Tom